8GB KIT 2X 4GB for HP-Compaq Business Desktop Series dc7900 (Small Form Factor/Convertible Minitower) dx7500 (Microtower) dx7500 (Small Form Factor) DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory at Amazon.com
4GB KIT (2 x 2GB) for Dell Optiplex 380 780 Mini Tower 780 Small Form Factor 780 XE Small Form Factor. DIMM DDR3 Non-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com